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authorLuke Shumaker <lukeshu@sbcglobal.net>2016-05-01 15:12:12 -0400
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-05-01 15:12:12 -0400
commitc9aa36da061816dee256a979c2ff8d2ee41824d9 (patch)
tree29f7002b80ee984b488bd047dbbd80b36bf892e9 /resources/mediawiki.page/mediawiki.page.gallery.js
parentb4274e0e33eafb5e9ead9d949ebf031a9fb8363b (diff)
parentd1ba966140d7a60cd5ae4e8667ceb27c1a138592 (diff)
Merge branch 'archwiki'
# Conflicts: # skins/ArchLinux.php # skins/ArchLinux/archlogo.gif
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diff --git a/resources/mediawiki.page/mediawiki.page.gallery.js b/resources/mediawiki.page/mediawiki.page.gallery.js
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-/**
- * Show gallery captions when focused. Copied directly from jquery.mw-jump.js.
- * Also Dynamically resize images to justify them.
- */
-( function ( $, mw ) {
- $( function () {
- var isTouchScreen,
- gettingFocus,
- galleries = 'ul.mw-gallery-packed-overlay, ul.mw-gallery-packed-hover, ul.mw-gallery-packed';
-
- // Is there a better way to detect a touchscreen? Current check taken from stack overflow.
- isTouchScreen = !!( window.ontouchstart !== undefined || window.DocumentTouch !== undefined && document instanceof window.DocumentTouch );
-
- if ( isTouchScreen ) {
- // Always show the caption for a touch screen.
- $( 'ul.mw-gallery-packed-hover' )
- .addClass( 'mw-gallery-packed-overlay' )
- .removeClass( 'mw-gallery-packed-hover' );
- } else {
- // Note use of just "a", not a.image, since we want this to trigger if a link in
- // the caption receives focus
- $( 'ul.mw-gallery-packed-hover li.gallerybox' ).on( 'focus blur', 'a', function ( e ) {
- // Confusingly jQuery leaves e.type as focusout for delegated blur events
- gettingFocus = e.type !== 'blur' && e.type !== 'focusout';
- $( this ).closest( 'li.gallerybox' ).toggleClass( 'mw-gallery-focused', gettingFocus );
- } );
- }
-
- // Now on to justification.
- // We may still get ragged edges if someone resizes their window. Could bind to
- // that event, otoh do we really want to constantly be resizing galleries?
- $( galleries ).each( function() {
- var lastTop,
- $img,
- imgWidth,
- imgHeight,
- rows = [],
- $gallery = $( this );
-
- $gallery.children( 'li' ).each( function() {
- // Math.floor to be paranoid if things are off by 0.00000000001
- var top = Math.floor( $(this ).position().top ),
- $this = $( this );
-
- if ( top !== lastTop ) {
- rows[rows.length] = [];
- lastTop = top;
- }
-
- $img = $this.find( 'div.thumb a.image img' );
- if ( $img.length && $img[0].height ) {
- imgHeight = $img[0].height;
- imgWidth = $img[0].width;
- } else {
- // If we don't have a real image, get the containing divs width/height.
- // Note that if we do have a real image, using this method will generally
- // give the same answer, but can be different in the case of a very
- // narrow image where extra padding is added.
- imgHeight = $this.children().children( 'div:first' ).height();
- imgWidth = $this.children().children( 'div:first' ).width();
- }
-
- // Hack to make an edge case work ok
- if ( imgHeight < 30 ) {
- // Don't try and resize this item.
- imgHeight = 0;
- }
-
- rows[rows.length-1][rows[rows.length-1].length] = {
- $elm: $this,
- width: $this.outerWidth(),
- imgWidth: imgWidth,
- aspect: imgWidth / imgHeight, // XXX: can divide by 0 ever happen?
- captionWidth: $this.children().children( 'div.gallerytextwrapper' ).width(),
- height: imgHeight
- };
- });
-
- (function () {
- var maxWidth,
- combinedAspect,
- combinedPadding,
- curRow,
- curRowHeight,
- wantedWidth,
- preferredHeight,
- newWidth,
- padding,
- $outerDiv,
- $innerDiv,
- $imageDiv,
- $imageElm,
- imageElm,
- $caption,
- hookInfo,
- i,
- j,
- avgZoom,
- totalZoom = 0;
-
- for ( i = 0; i < rows.length; i++ ) {
- maxWidth = $gallery.width();
- combinedAspect = 0;
- combinedPadding = 0;
- curRow = rows[i];
- curRowHeight = 0;
-
- for ( j = 0; j < curRow.length; j++ ) {
- if ( curRowHeight === 0 ) {
- if ( isFinite( curRow[j].height ) ) {
- // Get the height of this row, by taking the first
- // non-out of bounds height
- curRowHeight = curRow[j].height;
- }
- }
-
- if ( curRow[j].aspect === 0 || !isFinite( curRow[j].aspect ) ) {
- mw.log( 'Skipping item ' + j + ' due to aspect: ' + curRow[j].aspect );
- // One of the dimensions are 0. Probably should
- // not try to resize.
- combinedPadding += curRow[j].width;
- } else {
- combinedAspect += curRow[j].aspect;
- combinedPadding += curRow[j].width - curRow[j].imgWidth;
- }
- }
-
- // Add some padding for inter-element spacing.
- combinedPadding += 5 * curRow.length;
- wantedWidth = maxWidth - combinedPadding;
- preferredHeight = wantedWidth / combinedAspect;
-
- if ( preferredHeight > curRowHeight * 1.5 ) {
- // Only expand at most 1.5 times current size
- // As that's as high a resolution as we have.
- // Also on the off chance there is a bug in this
- // code, would prevent accidentally expanding to
- // be 10 billion pixels wide.
- mw.log( 'mw.page.gallery: Cannot fit row, aspect is ' + preferredHeight/curRowHeight );
- if ( i === rows.length - 1 ) {
- // If its the last row, and we can't fit it,
- // don't make the entire row huge.
- avgZoom = ( totalZoom / ( rows.length - 1 ) ) * curRowHeight;
- if ( isFinite( avgZoom ) && avgZoom >= 1 && avgZoom <= 1.5 ) {
- preferredHeight = avgZoom;
- } else {
- // Probably a single row gallery
- preferredHeight = curRowHeight;
- }
- } else {
- preferredHeight = 1.5 * curRowHeight;
- }
- }
- if ( !isFinite( preferredHeight ) ) {
- // This *definitely* should not happen.
- mw.log( 'mw.page.gallery: Trying to resize row ' + i + ' to ' + preferredHeight + '?!' );
- // Skip this row.
- continue;
- }
- if ( preferredHeight < 5 ) {
- // Well something clearly went wrong...
- mw.log( {maxWidth: maxWidth, combinedPadding: combinedPadding, combinedAspect: combinedAspect, wantedWidth: wantedWidth } );
- mw.log( 'mw.page.gallery: [BUG!] Fitting row ' + i + ' to too small a size: ' + preferredHeight );
- // Skip this row.
- continue;
- }
-
- if ( preferredHeight / curRowHeight > 1 ) {
- totalZoom += preferredHeight / curRowHeight;
- } else {
- // If we shrink, still consider that a zoom of 1
- totalZoom += 1;
- }
-
- for ( j = 0; j < curRow.length; j++ ) {
- newWidth = preferredHeight * curRow[j].aspect;
- padding = curRow[j].width - curRow[j].imgWidth;
- $outerDiv = curRow[j].$elm;
- $innerDiv = $outerDiv.children( 'div' ).first();
- $imageDiv = $innerDiv.children( 'div.thumb' );
- $imageElm = $imageDiv.find( 'img' ).first();
- imageElm = $imageElm.length ? $imageElm[0] : null;
- $caption = $outerDiv.find( 'div.gallerytextwrapper' );
-
-
- // Since we are going to re-adjust the height, the vertical
- // centering margins need to be reset.
- $imageDiv.children( 'div' ).css( 'margin', '0px auto' );
-
- if ( newWidth < 60 || !isFinite( newWidth ) ) {
- // Making something skinnier than this will mess up captions,
- mw.log( 'mw.page.gallery: Tried to make image ' + newWidth + 'px wide but too narrow.' );
- if ( newWidth < 1 || !isFinite( newWidth ) ) {
- $innerDiv.height( preferredHeight );
- // Don't even try and touch the image size if it could mean
- // making it disappear.
- continue;
- }
- } else {
- $outerDiv.width( newWidth + padding );
- $innerDiv.width( newWidth + padding );
- $imageDiv.width( newWidth );
- $caption.width( curRow[j].captionWidth + (newWidth - curRow[j].imgWidth ) );
- }
-
- hookInfo = {
- fullWidth: newWidth + padding,
- imgWidth: newWidth,
- imgHeight: preferredHeight,
- $innerDiv: $innerDiv,
- $imageDiv: $imageDiv,
- $outerDiv: $outerDiv,
- // Whether the hook took action
- resolved: false
- };
-
- /**
- * Gallery resize.
- *
- * If your handler resizes an image, it should also set the resolved
- * property to true. Additionally, because this module only exposes this
- * logic temporarily, you should load your module in position top to
- * ensure it is registered before this runs (FIXME: Don't use mw.hook)
- *
- * See TimedMediaHandler for an example.
- *
- * @event mediawiki_page_gallery_resize
- * @member mw.hook
- * @param {Object} hookInfo
- */
- mw.hook( 'mediawiki.page.gallery.resize' ).fire( hookInfo );
-
- if ( !hookInfo.resolved ) {
- if ( imageElm ) {
- // We don't always have an img, e.g. in the case of an invalid file.
- imageElm.width = newWidth;
- imageElm.height = preferredHeight;
- } else {
- // Not a file box.
- $imageDiv.height( preferredHeight );
- }
- }
- }
- }
- } )();
- } );
- } );
-} )( jQuery, mediaWiki );